<?php
//交集
$a = [
    "correctionQuery",
    "categoryTree",
    "list",
    "totalCount",
    "isCategorySearch",
    "priceInterval",
    "recallGoodsList",
    "urlparams",
    "pageObj",
    "sortUrl",
    "sortKeyName",
    "dealsTypesUrl",
    "commentLevelUrl",
    "hideOutOfStockUrl",
    "correctionQueryUrl",
    "dealTotalChunk",
    "crumbs",
    "recomendCategory",
    "categorySplit",
    "currentCategory",
    "alternateList",
    "isNofollow",
    "catDesc",
    "seoWordList",
    "selectArr"
];

$a1 = [
    "categoryLibrary",
    "newData",
    "bannerCenter",
    "bannerCenterBottom",
    "bannerPop",
    "bannerBig",
    "bannerBigHover",
    "bannerBelow",
    "bannerAppDownload",
    "homeSetting",
    "indexComponent"
];

$newA = array_intersect($a, $a1);
var_dump($newA);